Separate ground cable
B-12
Appendix B: Grounding and RF protection
98-137654-A
B.6.2 Ground cable - connection
Mount the ground cable close to and parallel to the shielded coax
cable thus minimizing ground loop problems. If possible, route the
coax cable and the ground cable in metal conduits bonded to the
hull or within a mast (depending on the actual installation).
The ground cable must be connected at one of the
mounting/grounding bolts on the ADU. Use bolts and washers of
stainless steel and seal the joint with protective coating to avoid
corrosion. If the ADU is to be isolated from the mounting base,
shoulder bushings and washers must be used — see figure B-7,
Isolation of the ADU from the mounting base
At the other end, connect the ground cable as described in
B.6.3 Isolation of the ADU from the mounting
base
In cases where the ADU is to be isolated from the mounting base,
shoulder bushings and washers (accessories) must be used as
illustrated below. Please note that the isolation has to be
implemented on all four mounting bolts (including the bolt securing
the ground cable).
The ground cable must be connected at one of the
mounting/grounding bolts on the ADU as illustrated below.
Figure B-7: Isolation of the ADU from the mounting base
Isolating shoulder bush
Isolating washer
Plain washer
Spring washer
(stainless steel)
(stainless steel)
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